Just out of curiosity, why do they want to upgrade to 3.1.1 instead of 4.0? With the new major release available, support for previous major releases becomes limited. For instance, hot fixes and patches are only provided for the most current major release.

Hello, if you purchased Veeam Backup before Veeam discontinued free ESXi support (June 3, 2009); then you can get a special license file that will enable Veeam Backup 4.0 to process free ESXi 3.5. Please contact your sales representative to obtain it. However, note that the special license will only provide support for free ESXi 3.5 and not free ESXi 4.0 - Veeam Backup never supported the latter.

Gostev wrote:Just out of curiosity, why do they want to upgrade to 3.1.1 instead of 4.0? With the new major release available, support for previous major releases becomes limited. For instance, hot fixes and patches are only provided for the most current major release.

Some customers just happen to have a slow rollout of updates/new versions. I'd love to put 4.0 on there, but....